You moisturize, you cleanse, you own an exfoliator—and you even use it sometimes. So why isn't your skin Jessica Alba perfect already? Maybe it's because seemingly innocuous, everyday things (like your 4 P.M. Skittles) are quietly sabotaging your skin. Here's what you need to avoid in the name of a gorgeous, glowing complexion.

Patricia Wexler, an associate clinical professor of dermatology at Mount Sinai School of Medicine in New York City, loves doing a good neck lipo on her patients. But even more, she loves giving them advice on how to avoid procedures altogether.

Even the most beauty-wise woman still occasionally sleeps in her makeup, skimps on sunscreen, or forgets to make a yearly appointment to see a skin doctor. In the spirit of the New Year, we asked top dermatologists to share their best advice for following through on your best skin-tentions.